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Could a dirty fuel filter cause engine light to come?

Yes, a dirty fuel filter can definitely cause the engine light to come on. Here's why:

* Restricted Fuel Flow: A clogged fuel filter restricts the flow of fuel to the engine. This can lead to:

* Reduced Engine Power: The engine may struggle to get enough fuel, resulting in sluggish acceleration or a noticeable loss of power.

* Rough Idle: The engine may run unevenly or stall, especially at idle.

* Misfires: If the fuel supply is too limited, the engine may misfire, causing a rough running experience.

* Engine Control Module (ECM) Detection: The ECM constantly monitors various engine parameters, including fuel pressure and flow. A dirty fuel filter will affect these readings, triggering a fault code and illuminating the engine light.

Symptoms of a Dirty Fuel Filter:

* Engine light comes on.

* Decreased fuel economy.

* Difficult starting.

* Hesitation or sputtering during acceleration.

* Rough idle or stalling.

* Engine misfiring.

What to do if your engine light comes on due to a dirty fuel filter:

1. Get the code read: Have a mechanic or auto parts store scan your vehicle's ECM to determine the exact fault code. This will confirm if the issue is indeed a clogged fuel filter.

2. Replace the fuel filter: Once you've confirmed the fuel filter is the culprit, have it replaced with a new one.

Important Note: While a dirty fuel filter is a common cause, it's always best to have your vehicle diagnosed by a mechanic to rule out other potential issues.